package ru.compft.common.utils;

import com.google.zxing.LuminanceSource;

import java.awt.image.BufferedImage;

/**
 * User: ASUS
 * Date: 12.11.12
 * Time: 9:19
 */
public class BufferedImageLuminanceSource extends LuminanceSource {

    public BufferedImageLuminanceSource(BufferedImage image) {
        super(image.getWidth(), image.getHeight());
    }

    /**
     * Fetches one row of luminance data from the underlying platform's bitmap. Values range from
     * 0 (black) to 255 (white). Because Java does not have an unsigned byte type, callers will have
     * to bitwise and with 0xff for each value. It is preferable for implementations of this method
     * to only fetch this row rather than the whole image, since no 2D Readers may be installed and
     * getMatrix() may never be called.
     *
     * @param y   The row to fetch, 0 <= y < getHeight().
     * @param row An optional preallocated array. If null or too small, it will be ignored.
     *            Always use the returned object, and ignore the .length of the array.
     * @return An array containing the luminance data.
     */
    @Override
    public byte[] getRow(int y, byte[] row) {
        return new byte[10];  //To change body of implemented methods use File | Settings | File Templates.
    }

    /**
     * Fetches luminance data for the underlying bitmap. Values should be fetched using:
     * int luminance = array[y * width + x] & 0xff;
     *
     * @return A row-major 2D array of luminance values. Do not use result.length as it may be
     *         larger than width * height bytes on some platforms. Do not modify the contents
     *         of the result.
     */
    @Override
    public byte[] getMatrix() {
        return new byte[10];  //To change body of implemented methods use File | Settings | File Templates.
    }
}
